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1 | /* This file is part of the Linux Trace Toolkit viewer |
2 | * Copyright (C) 2005 Peter Ho |
3 | * |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License Version 2 as |
6 | * published by the Free Software Foundation; |
7 | * |
8 | * This program is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
11 | * GNU General Public License for more details. |
12 | * |
13 | * You should have received a copy of the GNU General Public License |
14 | * along with this program; if not, write to the Free Software |
15 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
16 | * MA 02111-1307, USA. |
17 | */ |
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18 | |
19 | /****************************************************************** |
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20 | |
21 | Each field of the interrupt viewer is summarized as follows: |
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22 | |
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23 | - CPUID: processor ID |
24 | |
25 | - IrqId: IRQ ID |
26 | |
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27 | - Frequency (Hz): the number of interrupts per second (Hz). |
28 | We compute the total number of interrupts. Then |
29 | we divide it by the time interval. |
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30 | |
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31 | - Total Duration (nsec): the sum of each interrupt duration in nsec. |
32 | For a given Irq ID, we sum the duration of each interrupt |
33 | to give us the total duration |
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34 | |
35 | - Duration Standard_deviation = sqrt(1/N Sum ((xi -Xa)^2)) where |
36 | N: number of interrupts |
37 | xi: duration of an interrupt (nsec) |
38 | Xa: average duration (nsec) |
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39 | The formula is taken from wikipedia: http://en.wikipedia.org/wiki/Standard_deviation. |
40 | To calculate the duration standard deviation, we make two EventsRequest passes to the main window. |
41 | In the first EventsRequest pass, we calculate the total number of interrupts to compute for |
42 | the average Xa. In the second EventsRequest pass, calculate the standard deviation. |
43 | |
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44 | |
45 | - Max IRQ handler duration (nsec) [time interval]: the longest IRQ handler duration in nsec. |
46 | |
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47 | - Min IRQ handler duration (nsec) [time interval]: the shortest IRQ handler duration in nsec. |
48 | |
49 | - Average period (nsec): 1/Frequency(in HZ). The frequency is computed above. |
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50 | |
51 | -Period Standard_deviation = sqrt(1/N Sum ((xi -Xa)^2)) where |
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52 | N: number of interrupts |
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53 | xi: duration of an interrupt |
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54 | Xa: Period = 1/Frequency (in Hz) |
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55 | |
56 | -Frequency Standard_deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
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57 | N: number of interrupts |
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58 | xi: duration of an interrupt |
59 | Xa: Frequency (Hz) |
60 | |
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61 | |
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62 | *******************************************************************/ |
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63 | |
64 | |
65 | |
66 | #include <math.h> |
67 | #include <glib.h> |
68 | #include <gtk/gtk.h> |
69 | #include <gdk/gdk.h> |
70 | #include <stdio.h> |
71 | #include <stdlib.h> |
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72 | #include <math.h> |
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73 | #include <string.h> |
74 | #include <ltt/ltt.h> |
75 | #include <ltt/event.h> |
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76 | #include <ltt/trace.h> |
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77 | #include <lttv/module.h> |
78 | #include <lttv/hook.h> |
79 | #include <lttv/tracecontext.h> |
80 | #include <lttv/state.h> |
81 | #include <lttv/filter.h> |
82 | #include <lttvwindow/lttvwindow.h> |
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83 | #include <lttvwindow/lttv_plugin_tab.h> |
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84 | #include <ltt/time.h> |
85 | |
86 | #include "hInterruptsInsert.xpm" |
87 | |
88 | #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format) |
89 | #define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format) |
90 | #define NO_ITEMS 0 |
91 | |
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92 | typedef struct |
93 | { |
94 | LttTime duration; |
95 | LttTime start_time; |
96 | LttTime end_time; |
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97 | }IrqDuration; |
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98 | |
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99 | typedef struct { |
100 | guint cpu_id; |
101 | guint id; |
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102 | guint TotalNumberOfInterrupts; |
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103 | LttTime total_duration; |
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104 | guint average_duration; |
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105 | IrqDuration max_irq_handler; |
106 | IrqDuration min_irq_handler; |
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107 | }Irq; |
108 | |
109 | typedef struct { |
110 | guint id; |
111 | guint cpu_id; |
112 | LttTime event_time; |
113 | }irq_entry; |
114 | |
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115 | |
116 | typedef struct |
117 | { |
118 | guint irqId; |
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119 | guint TotalNumberOfInterrupts;//frequency;// |
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120 | guint64 sumOfDurations; // to store the Sum ((xi -Xa)^2) of the duration Standard deviation |
121 | guint64 sumOfPeriods; // to store the Sum ((xi -Xa)^2) of the period Standard deviation |
122 | guint64 sumOfFrequencies;// to store the Sum ((xi -Xa)^2) of the frequency Standard deviation |
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123 | |
124 | }SumId; |
125 | |
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126 | enum type_t { |
127 | IRQ_ENTRY, |
128 | IRQ_EXIT |
129 | }; |
130 | |
131 | /** Array containing instanced objects. Used when module is unloaded */ |
132 | static GSList *interrupt_data_list = NULL ; |
133 | |
134 | |
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135 | //fixed #define TRACE_NUMBER 0 |
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136 | |
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137 | typedef struct _InterruptEventData { |
138 | |
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139 | /*Graphical Widgets */ |
140 | GtkWidget * ScrollWindow; |
141 | GtkListStore *ListStore; |
142 | GtkWidget *Hbox; |
143 | GtkWidget *TreeView; |
144 | GtkTreeSelection *SelectionTree; |
145 | |
146 | Tab * tab; /* tab that contains this plug-in*/ |
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147 | LttvPluginTab *ptab; |
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148 | LttvHooks * event_hooks; |
149 | LttvHooks * hooks_trace_after; |
150 | LttvHooks * hooks_trace_before; |
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151 | TimeWindow time_window; |
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152 | LttvHooksById * event_by_id_hooks; |
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153 | GArray *FirstRequestIrqExit; |
154 | GArray *FirstRequestIrqEntry; |
155 | GArray *SecondRequestIrqEntry; |
156 | GArray *SecondRequestIrqExit; |
157 | GArray *SumArray; |
158 | |
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159 | } InterruptEventData ; |
160 | |
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161 | |
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162 | /* Function prototypes */ |
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163 | |
164 | static gboolean interrupt_update_time_window(void * hook_data, void * call_data); |
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165 | static GtkWidget *interrupts(LttvPlugin *plugin); |
166 | static InterruptEventData *system_info(LttvPluginTab *ptab); |
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167 | void interrupt_destructor(InterruptEventData *event_viewer_data); |
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168 | static void FirstRequest(InterruptEventData *event_data ); |
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169 | static guint64 get_interrupt_id(LttEvent *e); |
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170 | static gboolean trace_header(void *hook_data, void *call_data); |
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171 | static gboolean DisplayViewer (void *hook_data, void *call_data); |
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172 | static void CalculateData(LttTime time_exit, guint cpu_id, InterruptEventData *event_data); |
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173 | static void CalculateTotalDurationAndMaxIrqDurationAndMinIrqDuration(irq_entry *e, LttTime time_exit, GArray *FirstRequestIrqExit); |
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174 | static gboolean FirstRequestIrqEntryCallback(void *hook_data, void *call_data); |
175 | static gboolean FirstRequestIrqExitCallback(void *hook_data, void *call_data); |
176 | static gboolean SecondRequest(void *hook_data, void *call_data); |
177 | static void CalculateAverageDurationForEachIrqId(InterruptEventData *event_data); |
178 | static gboolean SecondRequestIrqEntryCallback(void *hook_data, void *call_data); |
179 | static gboolean SecondRequestIrqExitCallback(void *hook_data, void *call_data); |
180 | static void CalculateXi(LttEvent *event, InterruptEventData *event_data); |
181 | static void SumItems(gint irq_id, LttTime Xi, InterruptEventData *event_data); |
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182 | static int CalculateDurationStandardDeviation(gint id, InterruptEventData *event_data); |
183 | static int CalculatePeriodStandardDeviation(gint id, InterruptEventData *event_data); |
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184 | static int FrequencyInHZ(gint NumberOfInterruptions, TimeWindow time_window); |
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185 | static guint64 CalculatePeriodInnerPart(guint Xi, guint FrequencyHZ); |
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186 | static guint64 CalculateFrequencyInnerPart(guint Xi_in_ns, guint FrequencyHZ); |
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187 | static void InterruptFree(InterruptEventData *event_viewer_data); |
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188 | static int CalculateFrequencyStandardDeviation(gint id, InterruptEventData *event_data); |
189 | |
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190 | /* Enumeration of the columns */ |
191 | enum{ |
192 | CPUID_COLUMN, |
193 | IRQ_ID_COLUMN, |
194 | FREQUENCY_COLUMN, |
195 | DURATION_COLUMN, |
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196 | DURATION_STANDARD_DEV_COLUMN, |
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197 | MAX_IRQ_HANDLER_COLUMN, |
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198 | MIN_IRQ_HANDLER_COLUMN, |
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199 | AVERAGE_PERIOD, |
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200 | PERIOD_STANDARD_DEV_COLUMN, |
201 | FREQUENCY_STANDARD_DEV_COLUMN, |
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202 | N_COLUMNS |
203 | }; |
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204 | |
205 | |
206 | |
207 | /** |
208 | * init function |
209 | * |
210 | * |
211 | * This is the entry point of the viewer. |
212 | * |
213 | */ |
214 | static void init() { |
215 | g_info("interrupts: init()"); |
216 | lttvwindow_register_constructor("interrupts", |
217 | "/", |
218 | "Insert Interrupts View", |
219 | hInterruptsInsert_xpm, |
220 | "Insert Interrupts View", |
221 | interrupts); |
222 | |
223 | } |
224 | |
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225 | |
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226 | /** |
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227 | * Constructor hook |
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228 | * |
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229 | */ |
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230 | static GtkWidget *interrupts(LttvPlugin *plugin) |
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231 | { |
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232 | LttvPluginTab *ptab = LTTV_PLUGIN_TAB(plugin); |
233 | InterruptEventData* event_data = system_info(ptab) ; |
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234 | if(event_data) |
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235 | return event_data->Hbox; |
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236 | else |
237 | return NULL; |
238 | } |
239 | |
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240 | /** |
241 | * This function initializes the Event Viewer functionnality through the |
242 | * GTK API. |
243 | */ |
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244 | InterruptEventData *system_info(LttvPluginTab *ptab) |
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245 | { |
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246 | |
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247 | LttTime end; |
248 | GtkTreeViewColumn *column; |
249 | GtkCellRenderer *renderer; |
250 | InterruptEventData* event_viewer_data = g_new(InterruptEventData,1) ; |
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251 | Tab *tab = ptab->tab; |
252 | event_viewer_data->ptab = ptab; |
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253 | event_viewer_data->tab = tab; |
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254 | |
255 | /*Get the current time frame from the main window */ |
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256 | event_viewer_data->time_window = lttvwindow_get_time_window(tab); |
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257 | |
258 | event_viewer_data->FirstRequestIrqExit = g_array_new(FALSE, FALSE, sizeof(Irq)); |
259 | event_viewer_data->FirstRequestIrqEntry = g_array_new(FALSE, FALSE, sizeof(irq_entry)); |
260 | |
261 | event_viewer_data->SecondRequestIrqEntry = g_array_new(FALSE, FALSE, sizeof(irq_entry)); |
262 | event_viewer_data->SecondRequestIrqExit = g_array_new(FALSE, FALSE, sizeof(Irq)); |
263 | |
264 | event_viewer_data->SumArray = g_array_new(FALSE, FALSE, sizeof(SumId)); |
265 | |
266 | |
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267 | /*Create tha main window for the viewer */ |
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268 | event_viewer_data->ScrollWindow = gtk_scrolled_window_new (NULL, NULL); |
269 | gtk_widget_show (event_viewer_data->ScrollWindow); |
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270 | gtk_scrolled_window_set_policy( |
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271 | GTK_SCROLLED_WINDOW(event_viewer_data->ScrollWindow), |
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272 | GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC/*GTK_POLICY_NEVER*/); |
273 | |
274 | /* Create a model for storing the data list */ |
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275 | event_viewer_data->ListStore = gtk_list_store_new ( |
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276 | N_COLUMNS, /* Total number of columns */ |
277 | G_TYPE_INT, /* CPUID */ |
278 | G_TYPE_INT, /* IRQ_ID */ |
279 | G_TYPE_INT, /* Frequency */ |
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280 | G_TYPE_UINT64, /* Duration */ |
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281 | G_TYPE_INT, /* standard deviation */ |
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282 | G_TYPE_STRING, /* Max IRQ handler */ |
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283 | G_TYPE_STRING, /* Min IRQ handler */ |
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284 | G_TYPE_INT, /* Average period */ |
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285 | G_TYPE_INT, /* period standard deviation */ |
286 | G_TYPE_INT /* frequency standard deviation */ |
287 | |
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288 | ); |
289 | |
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290 | event_viewer_data->TreeView = gtk_tree_view_new_with_model (GTK_TREE_MODEL (event_viewer_data->ListStore)); |
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291 | |
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292 | g_object_unref (G_OBJECT (event_viewer_data->ListStore)); |
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293 | |
294 | renderer = gtk_cell_renderer_text_new (); |
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295 | column = gtk_tree_view_column_new_with_attributes ("CPU ID", |
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296 | renderer, |
297 | "text", CPUID_COLUMN, |
298 | NULL); |
299 | gtk_tree_view_column_set_alignment (column, 0.0); |
300 | gtk_tree_view_column_set_fixed_width (column, 45); |
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301 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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302 | |
303 | |
304 | renderer = gtk_cell_renderer_text_new (); |
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305 | column = gtk_tree_view_column_new_with_attributes ("IRQ ID", |
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306 | renderer, |
307 | "text", IRQ_ID_COLUMN, |
308 | NULL); |
309 | gtk_tree_view_column_set_alignment (column, 0.0); |
310 | gtk_tree_view_column_set_fixed_width (column, 220); |
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311 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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312 | |
313 | renderer = gtk_cell_renderer_text_new (); |
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314 | column = gtk_tree_view_column_new_with_attributes ("Frequency (Hz)", |
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315 | renderer, |
316 | "text", FREQUENCY_COLUMN, |
317 | NULL); |
318 | gtk_tree_view_column_set_alignment (column, 1.0); |
319 | gtk_tree_view_column_set_fixed_width (column, 220); |
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320 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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321 | |
322 | renderer = gtk_cell_renderer_text_new (); |
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323 | column = gtk_tree_view_column_new_with_attributes ("Total Duration (nsec)", |
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324 | renderer, |
325 | "text", DURATION_COLUMN, |
326 | NULL); |
327 | gtk_tree_view_column_set_alignment (column, 0.0); |
328 | gtk_tree_view_column_set_fixed_width (column, 145); |
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329 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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330 | |
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331 | |
332 | renderer = gtk_cell_renderer_text_new (); |
333 | column = gtk_tree_view_column_new_with_attributes ("Duration standard deviation (nsec)", |
334 | renderer, |
335 | "text", DURATION_STANDARD_DEV_COLUMN, |
336 | NULL); |
337 | gtk_tree_view_column_set_alignment (column, 0.0); |
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338 | gtk_tree_view_column_set_fixed_width (column, 200); |
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339 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
340 | |
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341 | renderer = gtk_cell_renderer_text_new (); |
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342 | column = gtk_tree_view_column_new_with_attributes ("Max IRQ handler duration (nsec) [time interval]", |
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343 | renderer, |
344 | "text", MAX_IRQ_HANDLER_COLUMN, |
345 | NULL); |
346 | gtk_tree_view_column_set_alignment (column, 0.0); |
347 | gtk_tree_view_column_set_fixed_width (column, 250); |
348 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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349 | |
350 | renderer = gtk_cell_renderer_text_new (); |
351 | column = gtk_tree_view_column_new_with_attributes ("Min IRQ handler duration (nsec) [time interval]", |
352 | renderer, |
353 | "text", MIN_IRQ_HANDLER_COLUMN, |
354 | NULL); |
355 | gtk_tree_view_column_set_alignment (column, 0.0); |
356 | gtk_tree_view_column_set_fixed_width (column, 250); |
357 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
358 | |
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359 | renderer = gtk_cell_renderer_text_new (); |
360 | column = gtk_tree_view_column_new_with_attributes (" Average period (nsec)", |
361 | renderer, |
362 | "text", AVERAGE_PERIOD, |
363 | NULL); |
364 | gtk_tree_view_column_set_alignment (column, 0.0); |
365 | gtk_tree_view_column_set_fixed_width (column, 200); |
366 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
367 | |
368 | renderer = gtk_cell_renderer_text_new (); |
369 | column = gtk_tree_view_column_new_with_attributes ("Period standard deviation (nsec)", |
370 | renderer, |
371 | "text", PERIOD_STANDARD_DEV_COLUMN, |
372 | NULL); |
373 | gtk_tree_view_column_set_alignment (column, 0.0); |
374 | gtk_tree_view_column_set_fixed_width (column, 200); |
375 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
376 | |
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377 | renderer = gtk_cell_renderer_text_new (); |
378 | column = gtk_tree_view_column_new_with_attributes ("Frequency standard deviation (Hz)", |
379 | renderer, |
380 | "text", FREQUENCY_STANDARD_DEV_COLUMN, |
381 | NULL); |
382 | gtk_tree_view_column_set_alignment (column, 0.0); |
383 | gtk_tree_view_column_set_fixed_width (column, 200); |
384 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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385 | |
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386 | |
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387 | event_viewer_data->SelectionTree = gtk_tree_view_get_selection (GTK_TREE_VIEW (event_viewer_data->TreeView)); |
388 | gtk_tree_selection_set_mode (event_viewer_data->SelectionTree, GTK_SELECTION_SINGLE); |
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389 | |
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390 | gtk_container_add (GTK_CONTAINER (event_viewer_data->ScrollWindow), event_viewer_data->TreeView); |
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391 | |
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392 | event_viewer_data->Hbox = gtk_hbox_new(0, 0); |
393 | gtk_box_pack_start(GTK_BOX(event_viewer_data->Hbox), event_viewer_data->ScrollWindow, TRUE, TRUE, 0); |
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394 | |
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395 | gtk_widget_show(event_viewer_data->Hbox); |
396 | gtk_widget_show(event_viewer_data->TreeView); |
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397 | |
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398 | interrupt_data_list = g_slist_append(interrupt_data_list, event_viewer_data); |
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399 | /* Registration for time notification */ |
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400 | lttvwindow_register_time_window_notify(tab, |
401 | interrupt_update_time_window, |
402 | event_viewer_data); |
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403 | |
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404 | g_object_set_data_full(G_OBJECT(event_viewer_data->Hbox), |
405 | "event_data", |
406 | event_viewer_data, |
407 | (GDestroyNotify) InterruptFree); |
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408 | |
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409 | FirstRequest(event_viewer_data ); |
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410 | return event_viewer_data; |
411 | } |
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412 | |
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413 | |
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414 | /** |
415 | * |
416 | * For each trace in the traceset, this function: |
417 | * - registers a callback function to each hook |
418 | * - calls lttv_trace_find_hook() registers a hook function to event_by_id_hooks |
419 | * - calls lttvwindow_events_request() to request data in a specific |
420 | * time interval to the main window |
421 | * |
422 | */ |
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423 | static void FirstRequest(InterruptEventData *event_data ) |
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424 | { |
425 | guint i, k, l, nb_trace; |
426 | |
427 | LttvTraceHook *hook; |
428 | |
429 | guint ret; |
430 | |
431 | LttvTraceState *ts; |
432 | |
433 | GArray *hooks; |
434 | |
435 | EventsRequest *events_request; |
436 | |
437 | LttvTraceHookByFacility *thf; |
438 | |
439 | LttvTracesetContext *tsc = lttvwindow_get_traceset_context(event_data->tab); |
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440 | |
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441 | |
442 | /* Get the traceset */ |
443 | LttvTraceset *traceset = tsc->ts; |
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444 | |
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445 | nb_trace = lttv_traceset_number(traceset); |
446 | |
447 | /* There are many traces in a traceset. Iteration for each trace. */ |
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448 | //for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++) { |
449 | for(i = 0 ; i < nb_trace ; i++) { |
f2ec7aa9 |
450 | events_request = g_new(EventsRequest, 1); |
451 | |
452 | hooks = g_array_new(FALSE, FALSE, sizeof(LttvTraceHook)); |
453 | |
454 | hooks = g_array_set_size(hooks, 2); |
b3e7b125 |
455 | |
f2ec7aa9 |
456 | event_data->hooks_trace_before = lttv_hooks_new(); |
457 | |
458 | /* Registers a hook function */ |
459 | lttv_hooks_add(event_data->hooks_trace_before, trace_header, event_data, LTTV_PRIO_DEFAULT); |
460 | |
461 | event_data->hooks_trace_after = lttv_hooks_new(); |
dc06b1bc |
462 | |
463 | /* Registers a hook function */ |
464 | lttv_hooks_add(event_data->hooks_trace_after, SecondRequest, event_data, LTTV_PRIO_DEFAULT); |
f2ec7aa9 |
465 | /* Get a trace state */ |
466 | ts = (LttvTraceState *)tsc->traces[i]; |
467 | /* Create event_by_Id hooks */ |
468 | event_data->event_by_id_hooks = lttv_hooks_by_id_new(); |
b3e7b125 |
469 | |
f2ec7aa9 |
470 | /*Register event_by_id_hooks with a callback function*/ |
471 | ret = lttv_trace_find_hook(ts->parent.t, |
472 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_ENTRY, |
473 | LTT_FIELD_IRQ_ID, 0, 0, |
dc06b1bc |
474 | FirstRequestIrqEntryCallback, |
f2ec7aa9 |
475 | events_request, |
476 | &g_array_index(hooks, LttvTraceHook, 0)); |
477 | |
478 | ret = lttv_trace_find_hook(ts->parent.t, |
479 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_EXIT, |
480 | LTT_FIELD_IRQ_ID, 0, 0, |
dc06b1bc |
481 | FirstRequestIrqExitCallback, |
f2ec7aa9 |
482 | events_request, |
483 | &g_array_index(hooks, LttvTraceHook, 1)); |
484 | |
485 | g_assert(!ret); |
486 | /*iterate through the facility list*/ |
487 | for(k = 0 ; k < hooks->len; k++) |
488 | { |
489 | hook = &g_array_index(hooks, LttvTraceHook, k); |
490 | for(l=0; l<hook->fac_list->len; l++) |
491 | { |
492 | thf = g_array_index(hook->fac_list, LttvTraceHookByFacility*, l); |
493 | lttv_hooks_add(lttv_hooks_by_id_find(event_data->event_by_id_hooks, thf->id), |
494 | thf->h, |
495 | event_data, |
496 | LTTV_PRIO_DEFAULT); |
497 | |
498 | } |
499 | } |
500 | /* Initalize the EventsRequest structure */ |
501 | events_request->owner = event_data; |
502 | events_request->viewer_data = event_data; |
503 | events_request->servicing = FALSE; |
504 | events_request->start_time = event_data->time_window.start_time; |
505 | events_request->start_position = NULL; |
506 | events_request->stop_flag = FALSE; |
507 | events_request->end_time = event_data->time_window.end_time; |
508 | events_request->num_events = G_MAXUINT; |
509 | events_request->end_position = NULL; |
510 | events_request->trace = i; |
511 | |
512 | events_request->hooks = hooks; |
513 | |
514 | events_request->before_chunk_traceset = NULL; |
515 | events_request->before_chunk_trace = event_data->hooks_trace_before; |
516 | events_request->before_chunk_tracefile= NULL; |
517 | events_request->event = NULL; |
518 | events_request->event_by_id = event_data->event_by_id_hooks; |
519 | events_request->after_chunk_tracefile = NULL; |
231a6432 |
520 | events_request->after_chunk_trace = NULL; |
f2ec7aa9 |
521 | events_request->after_chunk_traceset = NULL; |
231a6432 |
522 | events_request->before_request = NULL; |
f2ec7aa9 |
523 | events_request->after_request = event_data->hooks_trace_after; |
524 | |
525 | lttvwindow_events_request(event_data->tab, events_request); |
526 | } |
527 | |
b3e7b125 |
528 | } |
5f5119ee |
529 | |
f2ec7aa9 |
530 | /** |
531 | * This function is called whenever an irq_entry event occurs. |
532 | * |
533 | */ |
dc06b1bc |
534 | static gboolean FirstRequestIrqEntryCallback(void *hook_data, void *call_data) |
f2ec7aa9 |
535 | { |
536 | |
b3e7b125 |
537 | LttTime event_time; |
b3e7b125 |
538 | unsigned cpu_id; |
539 | irq_entry entry; |
b3e7b125 |
540 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
541 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
f2ec7aa9 |
542 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
dc06b1bc |
543 | GArray* FirstRequestIrqEntry = event_data->FirstRequestIrqEntry; |
f2ec7aa9 |
544 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
b3e7b125 |
545 | event_time = ltt_event_time(e); |
b3e7b125 |
546 | cpu_id = ltt_event_cpu_id(e); |
f2ec7aa9 |
547 | |
231a6432 |
548 | |
549 | entry.id =get_interrupt_id(e); |
550 | entry.cpu_id = cpu_id; |
551 | entry.event_time = event_time; |
dc06b1bc |
552 | g_array_append_val (FirstRequestIrqEntry, entry); |
231a6432 |
553 | |
f2ec7aa9 |
554 | return FALSE; |
5f5119ee |
555 | } |
556 | |
f2ec7aa9 |
557 | /** |
558 | * This function gets the id of the interrupt. The id is stored in a dynamic structure. |
ecafd9df |
559 | * Refer to the print.c file for how to extract data from a dynamic structure. |
f2ec7aa9 |
560 | */ |
561 | static guint64 get_interrupt_id(LttEvent *e) |
5f5119ee |
562 | { |
f2ec7aa9 |
563 | guint i, num_fields; |
564 | LttEventType *event_type; |
565 | LttField *element; |
566 | LttField *field; |
567 | guint64 irq_id; |
568 | event_type = ltt_event_eventtype(e); |
569 | num_fields = ltt_eventtype_num_fields(event_type); |
570 | for(i = 0 ; i < num_fields-1 ; i++) |
571 | { |
572 | field = ltt_eventtype_field(event_type, i); |
573 | irq_id = ltt_event_get_long_unsigned(e,field); |
5f5119ee |
574 | } |
575 | return irq_id; |
5f5119ee |
576 | |
f2ec7aa9 |
577 | } |
578 | /** |
579 | * This function is called whenever an irq_exit event occurs. |
580 | * |
581 | */ |
dc06b1bc |
582 | gboolean FirstRequestIrqExitCallback(void *hook_data, void *call_data) |
f2ec7aa9 |
583 | { |
584 | LttTime event_time; |
585 | unsigned cpu_id; |
5f5119ee |
586 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
f2ec7aa9 |
587 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
588 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
589 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
590 | LttEventType *type = ltt_event_eventtype(e); |
591 | event_time = ltt_event_time(e); |
592 | cpu_id = ltt_event_cpu_id(e); |
231a6432 |
593 | |
e5258c09 |
594 | CalculateData( event_time, cpu_id, event_data); |
595 | |
231a6432 |
596 | return FALSE; |
5f5119ee |
597 | } |
598 | |
f2ec7aa9 |
599 | /** |
600 | * This function calculates the duration of an interrupt. |
601 | * |
602 | */ |
e5258c09 |
603 | static void CalculateData(LttTime time_exit, guint cpu_id,InterruptEventData *event_data) |
dc06b1bc |
604 | { |
5f5119ee |
605 | |
f2ec7aa9 |
606 | gint i, irq_id; |
607 | irq_entry *element; |
608 | LttTime duration; |
dc06b1bc |
609 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
610 | GArray *FirstRequestIrqEntry = event_data->FirstRequestIrqEntry; |
611 | for(i = 0; i < FirstRequestIrqEntry->len; i++) |
231a6432 |
612 | { |
dc06b1bc |
613 | element = &g_array_index(FirstRequestIrqEntry,irq_entry,i); |
231a6432 |
614 | if(element->cpu_id == cpu_id) |
615 | { |
ecafd9df |
616 | CalculateTotalDurationAndMaxIrqDurationAndMinIrqDuration(element,time_exit, FirstRequestIrqExit); |
dc06b1bc |
617 | g_array_remove_index(FirstRequestIrqEntry, i); |
f2ec7aa9 |
618 | break; |
619 | } |
620 | } |
e5258c09 |
621 | } |
ecafd9df |
622 | |
dc06b1bc |
623 | |
f2ec7aa9 |
624 | /** |
ecafd9df |
625 | * This function calculates the total duration of an interrupt and the longest & shortest Irq handlers. |
f2ec7aa9 |
626 | * |
627 | */ |
ecafd9df |
628 | static void CalculateTotalDurationAndMaxIrqDurationAndMinIrqDuration(irq_entry *e, LttTime time_exit, GArray *FirstRequestIrqExit) |
629 | { |
5f5119ee |
630 | Irq irq; |
631 | Irq *element; |
632 | guint i; |
633 | LttTime duration; |
634 | gboolean notFound = FALSE; |
635 | memset ((void*)&irq, 0,sizeof(Irq)); |
636 | |
231a6432 |
637 | /*first time*/ |
dc06b1bc |
638 | if(FirstRequestIrqExit->len == NO_ITEMS) |
231a6432 |
639 | { |
5f5119ee |
640 | irq.cpu_id = e->cpu_id; |
641 | irq.id = e->id; |
31935b31 |
642 | irq.TotalNumberOfInterrupts++; |
5f5119ee |
643 | irq.total_duration = ltt_time_sub(time_exit, e->event_time); |
e5258c09 |
644 | |
446b4179 |
645 | irq.max_irq_handler.start_time = e->event_time; |
646 | irq.max_irq_handler.end_time = time_exit; |
647 | irq.max_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
ecafd9df |
648 | |
649 | irq.min_irq_handler.start_time = e->event_time; |
650 | irq.min_irq_handler.end_time = time_exit; |
651 | irq.min_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
e5258c09 |
652 | |
dc06b1bc |
653 | g_array_append_val (FirstRequestIrqExit, irq); |
5f5119ee |
654 | } |
231a6432 |
655 | else |
656 | { |
dc06b1bc |
657 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
231a6432 |
658 | { |
dc06b1bc |
659 | element = &g_array_index(FirstRequestIrqExit,Irq,i); |
660 | if(element->id == e->id) |
661 | { |
5f5119ee |
662 | notFound = TRUE; |
663 | duration = ltt_time_sub(time_exit, e->event_time); |
664 | element->total_duration = ltt_time_add(element->total_duration, duration); |
31935b31 |
665 | element->TotalNumberOfInterrupts++; |
ecafd9df |
666 | // Max irq handler |
446b4179 |
667 | if(ltt_time_compare(duration,element->max_irq_handler.duration) > 0) |
668 | { |
669 | element->max_irq_handler.duration = duration; |
670 | element->max_irq_handler.start_time = e->event_time; |
671 | element->max_irq_handler.end_time = time_exit; |
672 | } |
ecafd9df |
673 | // Min irq handler |
674 | if(ltt_time_compare(duration,element->min_irq_handler.duration) < 0) |
675 | { |
676 | element->min_irq_handler.duration = duration; |
677 | element->min_irq_handler.start_time = e->event_time; |
678 | element->min_irq_handler.end_time = time_exit; |
679 | } |
5f5119ee |
680 | } |
681 | } |
231a6432 |
682 | if(!notFound) |
683 | { |
5f5119ee |
684 | irq.cpu_id = e->cpu_id; |
685 | irq.id = e->id; |
31935b31 |
686 | irq.TotalNumberOfInterrupts++; |
5f5119ee |
687 | irq.total_duration = ltt_time_sub(time_exit, e->event_time); |
ecafd9df |
688 | // Max irq handler |
446b4179 |
689 | irq.max_irq_handler.start_time = e->event_time; |
690 | irq.max_irq_handler.end_time = time_exit; |
691 | irq.max_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
ecafd9df |
692 | // Min irq handler |
693 | irq.min_irq_handler.start_time = e->event_time; |
694 | irq.min_irq_handler.end_time = time_exit; |
695 | irq.min_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
446b4179 |
696 | |
dc06b1bc |
697 | g_array_append_val (FirstRequestIrqExit, irq); |
5f5119ee |
698 | } |
699 | } |
700 | } |
231a6432 |
701 | |
e5258c09 |
702 | /** |
703 | * This function passes the second EventsRequest to LTTV |
704 | * |
705 | */ |
dc06b1bc |
706 | static gboolean SecondRequest(void *hook_data, void *call_data) |
707 | { |
708 | |
709 | guint i, k, l, nb_trace; |
710 | |
711 | LttvTraceHook *hook; |
712 | |
713 | guint ret; |
714 | |
715 | LttvTraceState *ts; |
716 | |
717 | GArray *hooks; |
718 | |
719 | EventsRequest *events_request; |
720 | |
721 | LttvTraceHookByFacility *thf; |
722 | |
723 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
724 | |
725 | LttvTracesetContext *tsc = lttvwindow_get_traceset_context(event_data->tab); |
726 | |
727 | CalculateAverageDurationForEachIrqId(event_data); |
728 | |
729 | /* Get the traceset */ |
730 | LttvTraceset *traceset = tsc->ts; |
731 | |
732 | nb_trace = lttv_traceset_number(traceset); |
733 | |
734 | /* There are many traces in a traceset. Iteration for each trace. */ |
8402f27d |
735 | for(i = 0 ; i < nb_trace ; i++) { |
736 | // fixed for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++) { |
dc06b1bc |
737 | events_request = g_new(EventsRequest, 1); |
738 | |
739 | hooks = g_array_new(FALSE, FALSE, sizeof(LttvTraceHook)); |
740 | |
741 | hooks = g_array_set_size(hooks, 2); |
742 | |
743 | event_data->hooks_trace_after = lttv_hooks_new(); |
744 | |
745 | /* Registers a hook function */ |
746 | lttv_hooks_add(event_data->hooks_trace_after, DisplayViewer, event_data, LTTV_PRIO_DEFAULT); |
747 | |
748 | /* Get a trace state */ |
749 | ts = (LttvTraceState *)tsc->traces[i]; |
750 | /* Create event_by_Id hooks */ |
751 | event_data->event_by_id_hooks = lttv_hooks_by_id_new(); |
752 | |
753 | /*Register event_by_id_hooks with a callback function*/ |
754 | ret = lttv_trace_find_hook(ts->parent.t, |
755 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_ENTRY, |
756 | LTT_FIELD_IRQ_ID, 0, 0, |
757 | SecondRequestIrqEntryCallback, |
758 | events_request, |
759 | &g_array_index(hooks, LttvTraceHook, 0)); |
760 | |
761 | ret = lttv_trace_find_hook(ts->parent.t, |
762 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_EXIT, |
763 | LTT_FIELD_IRQ_ID, 0, 0, |
764 | SecondRequestIrqExitCallback, |
765 | events_request, |
766 | &g_array_index(hooks, LttvTraceHook, 1)); |
767 | |
768 | g_assert(!ret); |
e5258c09 |
769 | |
770 | /* iterate through the facility list */ |
dc06b1bc |
771 | for(k = 0 ; k < hooks->len; k++) |
772 | { |
773 | hook = &g_array_index(hooks, LttvTraceHook, k); |
774 | for(l=0; l<hook->fac_list->len; l++) |
775 | { |
776 | thf = g_array_index(hook->fac_list, LttvTraceHookByFacility*, l); |
777 | lttv_hooks_add(lttv_hooks_by_id_find(event_data->event_by_id_hooks, thf->id), |
778 | thf->h, |
779 | event_data, |
780 | LTTV_PRIO_DEFAULT); |
781 | |
782 | } |
783 | } |
784 | /* Initalize the EventsRequest structure */ |
785 | events_request->owner = event_data; |
786 | events_request->viewer_data = event_data; |
787 | events_request->servicing = FALSE; |
788 | events_request->start_time = event_data->time_window.start_time; |
789 | events_request->start_position = NULL; |
790 | events_request->stop_flag = FALSE; |
791 | events_request->end_time = event_data->time_window.end_time; |
792 | events_request->num_events = G_MAXUINT; |
793 | events_request->end_position = NULL; |
794 | events_request->trace = i; |
795 | |
796 | events_request->hooks = hooks; |
797 | |
798 | events_request->before_chunk_traceset = NULL; |
799 | events_request->before_chunk_trace = NULL; |
800 | events_request->before_chunk_tracefile= NULL; |
801 | events_request->event = NULL; |
802 | events_request->event_by_id = event_data->event_by_id_hooks; |
803 | events_request->after_chunk_tracefile = NULL; |
804 | events_request->after_chunk_trace = NULL; |
805 | events_request->after_chunk_traceset = NULL; |
806 | events_request->before_request = NULL; |
807 | events_request->after_request = event_data->hooks_trace_after; |
808 | |
809 | lttvwindow_events_request(event_data->tab, events_request); |
810 | } |
e5258c09 |
811 | return FALSE; |
dc06b1bc |
812 | } |
813 | |
ecafd9df |
814 | /** |
815 | * This function calculates the average duration for each Irq Id |
816 | * |
817 | */ |
dc06b1bc |
818 | static void CalculateAverageDurationForEachIrqId(InterruptEventData *event_data) |
819 | { |
820 | guint64 real_data; |
821 | Irq *element; |
822 | gint i; |
823 | GArray* FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
824 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
825 | { |
826 | element = &g_array_index(FirstRequestIrqExit,Irq,i); |
827 | real_data = element->total_duration.tv_sec; |
828 | real_data *= NANOSECONDS_PER_SECOND; |
829 | real_data += element->total_duration.tv_nsec; |
31935b31 |
830 | if(element->TotalNumberOfInterrupts != 0) |
831 | element->average_duration = real_data / element->TotalNumberOfInterrupts; |
ecafd9df |
832 | else |
833 | element->average_duration = 0; |
dc06b1bc |
834 | } |
835 | |
836 | } |
837 | |
e5258c09 |
838 | /** |
839 | * This function is called whenever an irq_entry event occurs. Use in the second request |
840 | * |
841 | */ |
dc06b1bc |
842 | static gboolean SecondRequestIrqEntryCallback(void *hook_data, void *call_data) |
843 | { |
844 | |
845 | LttTime event_time; |
846 | unsigned cpu_id; |
847 | irq_entry entry; |
848 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
849 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
850 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
851 | GArray* SecondRequestIrqEntry = event_data->SecondRequestIrqEntry; |
852 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
853 | event_time = ltt_event_time(e); |
854 | cpu_id = ltt_event_cpu_id(e); |
855 | |
856 | |
857 | entry.id =get_interrupt_id(e); |
858 | entry.cpu_id = cpu_id; |
859 | entry.event_time = event_time; |
860 | g_array_append_val (SecondRequestIrqEntry, entry); |
861 | |
862 | return FALSE; |
863 | } |
864 | |
e5258c09 |
865 | /** |
866 | * This function is called whenever an irq_exit event occurs in the second request. |
867 | * |
868 | */ |
dc06b1bc |
869 | static gboolean SecondRequestIrqExitCallback(void *hook_data, void *call_data) |
870 | { |
871 | |
872 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
873 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
874 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
875 | LttEvent *event = ltt_tracefile_get_event(tfc->tf); |
876 | |
877 | CalculateXi(event, event_data); |
878 | return FALSE; |
879 | } |
880 | |
e5258c09 |
881 | |
882 | /** |
883 | * This function is called whenever an irq_exit event occurs in the second request. |
884 | * |
885 | */ |
dc06b1bc |
886 | static void CalculateXi(LttEvent *event_irq_exit, InterruptEventData *event_data) |
887 | { |
888 | gint i, irq_id; |
889 | irq_entry *element; |
890 | LttTime Xi; |
891 | LttTime exit_time; |
892 | unsigned cpu_id; |
893 | |
894 | GArray *SecondRequestIrqExit = event_data->SecondRequestIrqExit; |
895 | GArray *SecondRequestIrqEntry = event_data->SecondRequestIrqEntry; |
896 | cpu_id = ltt_event_cpu_id(event_irq_exit); |
897 | for(i = 0; i < SecondRequestIrqEntry->len; i++) |
898 | { |
899 | element = &g_array_index(SecondRequestIrqEntry,irq_entry,i); |
900 | if(element->cpu_id == cpu_id) |
901 | { |
902 | |
903 | /* time calculation */ |
904 | exit_time = ltt_event_time(event_irq_exit); |
905 | Xi = ltt_time_sub(exit_time, element->event_time); |
906 | irq_id = element->id; |
907 | |
908 | SumItems(irq_id, Xi,event_data); |
909 | g_array_remove_index(SecondRequestIrqEntry, i); |
910 | break; |
911 | } |
912 | } |
913 | } |
914 | |
e5258c09 |
915 | |
916 | /** |
917 | * This function computes the Sum ((xi -Xa)^2) and store the result in SumArray |
918 | * |
919 | */ |
dc06b1bc |
920 | static void SumItems(gint irq_id, LttTime Xi, InterruptEventData *event_data) |
921 | { |
922 | gint i; |
6b0817c2 |
923 | guint Xi_in_ns; |
dc06b1bc |
924 | |
6b0817c2 |
925 | gint duration_inner_part; |
926 | guint64 period_inner_part; |
ecafd9df |
927 | guint64 frequency_inner_part; |
928 | |
dc06b1bc |
929 | Irq *average; |
930 | SumId *sumItem; |
931 | SumId sum; |
6b0817c2 |
932 | int FrequencyHZ = 0; |
dc06b1bc |
933 | gboolean notFound = FALSE; |
934 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
935 | GArray *SumArray = event_data->SumArray; |
6b0817c2 |
936 | Xi_in_ns = Xi.tv_sec; |
937 | Xi_in_ns *= NANOSECONDS_PER_SECOND; |
938 | Xi_in_ns += Xi.tv_nsec; |
dc06b1bc |
939 | |
940 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
941 | { |
942 | average = &g_array_index(FirstRequestIrqExit,Irq,i); |
943 | if(irq_id == average->id) |
944 | { |
6b0817c2 |
945 | duration_inner_part = Xi_in_ns - average->average_duration; |
31935b31 |
946 | FrequencyHZ = FrequencyInHZ(average->TotalNumberOfInterrupts, event_data->time_window); |
dc06b1bc |
947 | sum.irqId = irq_id; |
ecafd9df |
948 | // compute (xi -Xa)^2 of the duration Standard deviation |
31935b31 |
949 | sum.TotalNumberOfInterrupts = average->TotalNumberOfInterrupts; |
6b0817c2 |
950 | sum.sumOfDurations = pow (duration_inner_part , 2); |
ecafd9df |
951 | |
952 | // compute (xi -Xa)^2 of the period Standard deviation |
6b0817c2 |
953 | period_inner_part = CalculatePeriodInnerPart(Xi_in_ns, FrequencyHZ); |
ecafd9df |
954 | |
955 | // compute (xi -Xa)^2 of the frequency Standard deviation |
956 | frequency_inner_part = CalculateFrequencyInnerPart(Xi_in_ns, FrequencyHZ); |
957 | |
6b0817c2 |
958 | sum.sumOfPeriods = period_inner_part; |
ecafd9df |
959 | |
960 | sum.sumOfFrequencies = frequency_inner_part; |
961 | |
dc06b1bc |
962 | if(event_data->SumArray->len == NO_ITEMS) |
963 | { |
964 | g_array_append_val (SumArray, sum); |
965 | } |
966 | else |
6b0817c2 |
967 | { |
dc06b1bc |
968 | for(i = 0; i < SumArray->len; i++) |
969 | { |
970 | sumItem = &g_array_index(SumArray, SumId, i); |
971 | if(sumItem->irqId == irq_id) |
972 | { |
973 | notFound = TRUE; |
974 | sumItem->sumOfDurations += sum.sumOfDurations; |
6b0817c2 |
975 | sumItem->sumOfPeriods += sum.sumOfPeriods; |
ecafd9df |
976 | sumItem->sumOfFrequencies += sum.sumOfFrequencies; |
977 | } |
dc06b1bc |
978 | } |
979 | if(!notFound) |
980 | { |
981 | g_array_append_val (SumArray, sum); |
982 | } |
6b0817c2 |
983 | |
dc06b1bc |
984 | } |
985 | |
986 | } |
987 | } |
988 | } |
989 | |
ecafd9df |
990 | /** |
991 | * This function computes the inner part of the period standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
992 | * The inner part is: (xi -Xa)^2 |
993 | */ |
6b0817c2 |
994 | static guint64 CalculatePeriodInnerPart(guint Xi, guint FrequencyHZ) |
995 | { |
996 | |
997 | double periodInSec; /*period in sec*/ |
998 | int periodInNSec; |
999 | gint difference; |
1000 | guint64 result; |
1001 | periodInSec = (double)1/FrequencyHZ; |
1002 | periodInSec *= NANOSECONDS_PER_SECOND; |
1003 | periodInNSec = (int)periodInSec; |
1004 | |
1005 | difference = Xi - periodInNSec; |
1006 | result = pow (difference , 2); |
6b0817c2 |
1007 | return result; |
ecafd9df |
1008 | } |
6b0817c2 |
1009 | |
ecafd9df |
1010 | /** |
1011 | * This function computes the inner part of the frequency standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
1012 | * The inner part is: (xi -Xa)^2 |
1013 | */ |
1014 | static guint64 CalculateFrequencyInnerPart(guint Xi_in_ns, guint FrequencyHZ) |
1015 | { |
1016 | guint64 result; |
1017 | gint difference; |
1018 | |
1019 | difference = Xi_in_ns - FrequencyHZ; |
1020 | result = pow (difference , 2); |
1021 | return result; |
6b0817c2 |
1022 | } |
f2ec7aa9 |
1023 | /** |
1024 | * This function displays the result on the viewer |
1025 | * |
1026 | */ |
dc06b1bc |
1027 | static gboolean DisplayViewer(void *hook_data, void *call_data) |
1028 | { |
5f5119ee |
1029 | |
dc06b1bc |
1030 | guint average; |
f2ec7aa9 |
1031 | gint i; |
1032 | Irq element; |
1033 | LttTime average_duration; |
1034 | GtkTreeIter iter; |
1035 | guint64 real_data; |
446b4179 |
1036 | guint maxIRQduration; |
05600f3b |
1037 | guint minIRQduration; |
6b0817c2 |
1038 | double periodInSec; |
1039 | int periodInNsec; |
e5258c09 |
1040 | char maxIrqHandler[80]; |
05600f3b |
1041 | char minIrqHandler[80]; |
f2ec7aa9 |
1042 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
dc06b1bc |
1043 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
52948a62 |
1044 | int FrequencyHZ = 0; |
6b0817c2 |
1045 | periodInSec = 0; |
f2ec7aa9 |
1046 | gtk_list_store_clear(event_data->ListStore); |
dc06b1bc |
1047 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
231a6432 |
1048 | { |
dc06b1bc |
1049 | element = g_array_index(FirstRequestIrqExit,Irq,i); |
f2ec7aa9 |
1050 | real_data = element.total_duration.tv_sec; |
1051 | real_data *= NANOSECONDS_PER_SECOND; |
1052 | real_data += element.total_duration.tv_nsec; |
446b4179 |
1053 | |
1054 | |
1055 | maxIRQduration = element.max_irq_handler.duration.tv_sec; |
1056 | maxIRQduration *= NANOSECONDS_PER_SECOND; |
1057 | maxIRQduration += element.max_irq_handler.duration.tv_nsec; |
e5258c09 |
1058 | |
fc77fe59 |
1059 | sprintf(maxIrqHandler, "%d [%d.%d - %d.%d]",maxIRQduration, element.max_irq_handler.start_time.tv_sec, \ |
1060 | element.max_irq_handler.start_time.tv_nsec, element.max_irq_handler.end_time.tv_sec, \ |
1061 | element.max_irq_handler.end_time.tv_nsec) ; |
05600f3b |
1062 | |
1063 | minIRQduration = element.min_irq_handler.duration.tv_sec; |
1064 | minIRQduration *= NANOSECONDS_PER_SECOND; |
1065 | minIRQduration += element.min_irq_handler.duration.tv_nsec; |
1066 | sprintf(minIrqHandler, "%d [%d.%d - %d.%d]",minIRQduration, element.min_irq_handler.start_time.tv_sec, \ |
1067 | element.min_irq_handler.start_time.tv_nsec, element.min_irq_handler.end_time.tv_sec, \ |
1068 | element.min_irq_handler.end_time.tv_nsec) ; |
1069 | |
1070 | |
31935b31 |
1071 | FrequencyHZ = FrequencyInHZ(element.TotalNumberOfInterrupts,event_data->time_window); |
6b0817c2 |
1072 | |
52948a62 |
1073 | if(FrequencyHZ != 0) |
1074 | { |
6b0817c2 |
1075 | periodInSec = (double)1/FrequencyHZ; |
1076 | periodInSec *= NANOSECONDS_PER_SECOND; |
1077 | periodInNsec = (int)periodInSec; |
ecafd9df |
1078 | |
52948a62 |
1079 | } |
6b0817c2 |
1080 | |
f2ec7aa9 |
1081 | gtk_list_store_append (event_data->ListStore, &iter); |
1082 | gtk_list_store_set (event_data->ListStore, &iter, |
1083 | CPUID_COLUMN, element.cpu_id, |
1084 | IRQ_ID_COLUMN, element.id, |
52948a62 |
1085 | FREQUENCY_COLUMN, FrequencyHZ, |
f2ec7aa9 |
1086 | DURATION_COLUMN, real_data, |
6b0817c2 |
1087 | DURATION_STANDARD_DEV_COLUMN, CalculateDurationStandardDeviation(element.id, event_data), |
e5258c09 |
1088 | MAX_IRQ_HANDLER_COLUMN, maxIrqHandler, |
05600f3b |
1089 | MIN_IRQ_HANDLER_COLUMN, minIrqHandler, |
6b0817c2 |
1090 | AVERAGE_PERIOD , periodInNsec, |
1091 | PERIOD_STANDARD_DEV_COLUMN, CalculatePeriodStandardDeviation(element.id, event_data), |
ecafd9df |
1092 | FREQUENCY_STANDARD_DEV_COLUMN, CalculateFrequencyStandardDeviation(element.id, event_data), |
8f72bb94 |
1093 | -1); |
f2ec7aa9 |
1094 | } |
dc06b1bc |
1095 | |
dc06b1bc |
1096 | |
1097 | if(event_data->FirstRequestIrqExit->len) |
231a6432 |
1098 | { |
dc06b1bc |
1099 | g_array_remove_range (event_data->FirstRequestIrqExit,0,event_data->FirstRequestIrqExit->len); |
231a6432 |
1100 | } |
1101 | |
dc06b1bc |
1102 | if(event_data->FirstRequestIrqEntry->len) |
231a6432 |
1103 | { |
dc06b1bc |
1104 | g_array_remove_range (event_data->FirstRequestIrqEntry,0,event_data->FirstRequestIrqEntry->len); |
1105 | } |
1106 | |
1107 | if(event_data->SecondRequestIrqEntry->len) |
1108 | { |
1109 | g_array_remove_range (event_data->SecondRequestIrqEntry,0,event_data->SecondRequestIrqEntry->len); |
1110 | } |
231a6432 |
1111 | |
dc06b1bc |
1112 | if(event_data->SecondRequestIrqExit->len) |
1113 | { |
1114 | g_array_remove_range (event_data->SecondRequestIrqExit,0, event_data->SecondRequestIrqExit->len); |
1115 | } |
1116 | |
1117 | if(event_data->SumArray->len) |
1118 | { |
1119 | g_array_remove_range (event_data->SumArray,0, event_data->SumArray->len); |
231a6432 |
1120 | } |
dc06b1bc |
1121 | |
f2ec7aa9 |
1122 | return FALSE; |
5f5119ee |
1123 | } |
dc06b1bc |
1124 | |
25c6412d |
1125 | |
6b0817c2 |
1126 | /** |
1127 | * This function converts the number of interrupts over a time window to |
1128 | * frequency in HZ |
1129 | */ |
ecafd9df |
1130 | static int FrequencyInHZ(gint NumerofInterruptions, TimeWindow time_window) |
25c6412d |
1131 | { |
1132 | guint64 frequencyHz = 0; |
6b0817c2 |
1133 | double timeSec; // time in second |
1134 | double result; |
1135 | result = ltt_time_to_double(time_window.time_width); |
1136 | timeSec = (result/NANOSECONDS_PER_SECOND); //time in second |
ecafd9df |
1137 | frequencyHz = NumerofInterruptions / timeSec; |
25c6412d |
1138 | return frequencyHz; |
1139 | } |
1140 | |
e5258c09 |
1141 | /** |
6b0817c2 |
1142 | * This function calculates the duration standard deviation |
ecafd9df |
1143 | * Duration standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
1144 | * Where: |
1145 | * sumId.sumOfDurations -> Sum ((xi -Xa)^2) |
1146 | * inner_component -> 1/N Sum ((xi -Xa)^2) |
1147 | * deviation-> sqrt(1/N Sum ((xi -Xa)^2)) |
e5258c09 |
1148 | */ |
6b0817c2 |
1149 | static int CalculateDurationStandardDeviation(gint id, InterruptEventData *event_data) |
dc06b1bc |
1150 | { |
1151 | int i; |
1152 | SumId sumId; |
1153 | double inner_component; |
1154 | int deviation = 0; |
1155 | for(i = 0; i < event_data->SumArray->len; i++) |
1156 | { |
1157 | sumId = g_array_index(event_data->SumArray, SumId, i); |
1158 | if(id == sumId.irqId) |
1159 | { |
31935b31 |
1160 | if(sumId.TotalNumberOfInterrupts != 0) |
1161 | inner_component = sumId.sumOfDurations/ sumId.TotalNumberOfInterrupts; |
ecafd9df |
1162 | else |
1163 | inner_component = 0.0; |
dc06b1bc |
1164 | deviation = sqrt(inner_component); |
25c6412d |
1165 | return deviation; |
dc06b1bc |
1166 | } |
1167 | } |
1168 | return deviation; |
1169 | } |
6b0817c2 |
1170 | |
1171 | |
1172 | /** |
1173 | * This function calculates the period standard deviation |
ecafd9df |
1174 | * Period standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
1175 | * Where: |
1176 | * sumId.sumOfPeriods -> Sum ((xi -Xa)^2) |
1177 | * inner_component -> 1/N Sum ((xi -Xa)^2) |
1178 | * period_standard_deviation-> sqrt(1/N Sum ((xi -Xa)^2)) |
1179 | |
6b0817c2 |
1180 | * |
1181 | */ |
1182 | static int CalculatePeriodStandardDeviation(gint id, InterruptEventData *event_data) |
1183 | { |
1184 | int i; |
1185 | SumId sumId; |
1186 | guint64 inner_component; |
1187 | guint64 period_standard_deviation = 0; |
ecafd9df |
1188 | |
6b0817c2 |
1189 | for(i = 0; i < event_data->SumArray->len; i++) |
1190 | { |
1191 | sumId = g_array_index(event_data->SumArray, SumId, i); |
1192 | if(id == sumId.irqId) |
1193 | { |
31935b31 |
1194 | if(sumId.TotalNumberOfInterrupts != 0) |
1195 | inner_component = sumId.sumOfPeriods / sumId.TotalNumberOfInterrupts; |
ecafd9df |
1196 | else |
1197 | inner_component = 0; |
1198 | |
6b0817c2 |
1199 | period_standard_deviation = sqrt(inner_component); |
1200 | } |
1201 | } |
1202 | |
1203 | return period_standard_deviation; |
1204 | } |
ecafd9df |
1205 | |
1206 | /** |
1207 | * This function calculates the frequency standard deviation |
1208 | * Frequency standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
1209 | * Where: |
1210 | * sumId.sumOfFrequencies -> Sum ((xi -Xa)^2) |
1211 | * inner_component -> 1/N Sum ((xi -Xa)^2) |
1212 | * frequency_standard_deviation-> sqrt(1/N Sum ((xi -Xa)^2)) |
1213 | * |
1214 | */ |
1215 | static int CalculateFrequencyStandardDeviation(gint id, InterruptEventData *event_data) |
1216 | { |
1217 | int i; |
1218 | SumId sumId; |
1219 | guint64 inner_component; |
1220 | guint64 frequency_standard_deviation = 0; |
1221 | for(i = 0; i < event_data->SumArray->len; i++) |
1222 | { |
1223 | sumId = g_array_index(event_data->SumArray, SumId, i); |
1224 | if(id == sumId.irqId) |
1225 | { |
31935b31 |
1226 | if(sumId.TotalNumberOfInterrupts != 0) |
1227 | inner_component = sumId.sumOfFrequencies / sumId.TotalNumberOfInterrupts; |
ecafd9df |
1228 | else |
1229 | inner_component = 0; |
1230 | |
1231 | frequency_standard_deviation = sqrt(inner_component); |
1232 | } |
1233 | } |
1234 | return frequency_standard_deviation; |
1235 | } |
1236 | |
f2ec7aa9 |
1237 | /* |
1238 | * This function is called by the main window |
1239 | * when the time interval needs to be updated. |
1240 | **/ |
1241 | gboolean interrupt_update_time_window(void * hook_data, void * call_data) |
1242 | { |
5f5119ee |
1243 | InterruptEventData *event_data = (InterruptEventData *) hook_data; |
1244 | const TimeWindowNotifyData *time_window_nofify_data = ((const TimeWindowNotifyData *)call_data); |
1245 | event_data->time_window = *time_window_nofify_data->new_time_window; |
1246 | g_info("interrupts: interrupt_update_time_window()\n"); |
1247 | Tab *tab = event_data->tab; |
1248 | lttvwindow_events_request_remove_all(tab, event_data); |
dc06b1bc |
1249 | FirstRequest(event_data ); |
f2ec7aa9 |
1250 | return FALSE; |
5f5119ee |
1251 | } |
1252 | |
f2ec7aa9 |
1253 | |
1254 | gboolean trace_header(void *hook_data, void *call_data) |
1255 | { |
1256 | |
1257 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
1258 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
f2ec7aa9 |
1259 | LttEvent *e; |
1260 | LttTime event_time; |
1261 | return FALSE; |
5f5119ee |
1262 | } |
1263 | |
f2ec7aa9 |
1264 | void interrupt_destroy_walk(gpointer data, gpointer user_data) |
1265 | { |
5f5119ee |
1266 | g_info("interrupt_destroy_walk"); |
fc77fe59 |
1267 | InterruptEventData *event_data = (InterruptEventData*) data; |
5f5119ee |
1268 | interrupt_destructor((InterruptEventData*)data); |
5f5119ee |
1269 | } |
1270 | |
fc77fe59 |
1271 | |
f2ec7aa9 |
1272 | void interrupt_destructor(InterruptEventData *event_viewer_data) |
1273 | { |
1274 | /* May already been done by GTK window closing */ |
1275 | g_info("enter interrupt_destructor \n"); |
1276 | if(GTK_IS_WIDGET(event_viewer_data->Hbox)) |
1277 | { |
1278 | gtk_widget_destroy(event_viewer_data->Hbox); |
1279 | } |
1280 | } |
1281 | |
fc77fe59 |
1282 | /** |
1283 | This function is called when the viewer is destroyed to free hooks and memory |
1284 | */ |
1285 | static void InterruptFree(InterruptEventData *event_viewer_data) |
1286 | { |
1287 | Tab *tab = event_viewer_data->tab; |
1288 | if(tab != NULL) |
1289 | { |
1290 | |
1291 | g_array_free(event_viewer_data->FirstRequestIrqExit, TRUE); |
1292 | g_array_free(event_viewer_data->FirstRequestIrqEntry, TRUE); |
1293 | g_array_free(event_viewer_data->SecondRequestIrqEntry, TRUE); |
1294 | g_array_free(event_viewer_data->SecondRequestIrqExit, TRUE); |
1295 | g_array_free(event_viewer_data->SumArray, TRUE); |
1296 | |
1297 | lttvwindow_unregister_time_window_notify(tab, interrupt_update_time_window, event_viewer_data); |
1298 | |
1299 | lttvwindow_events_request_remove_all(event_viewer_data->tab, |
1300 | event_viewer_data); |
1301 | |
1302 | interrupt_data_list = g_slist_remove(interrupt_data_list, event_viewer_data); |
1303 | |
1304 | } |
1305 | |
1306 | } |
1307 | |
5f5119ee |
1308 | /** |
1309 | * plugin's destroy function |
1310 | * |
1311 | * This function releases the memory reserved by the module and unregisters |
1312 | * everything that has been registered in the gtkTraceSet API. |
1313 | */ |
dc06b1bc |
1314 | static void destroy() |
1315 | { |
1316 | |
5f5119ee |
1317 | g_info("Destroy interrupts"); |
1318 | g_slist_foreach(interrupt_data_list, interrupt_destroy_walk, NULL ); |
1319 | g_slist_free(interrupt_data_list); |
1320 | lttvwindow_unregister_constructor(interrupts); |
1321 | |
1322 | } |
1323 | |
1324 | LTTV_MODULE("interrupts", "interrupts info view", \ |
1325 | "Graphical module to display interrupts performance", \ |
1326 | init, destroy, "lttvwindow") |